see your authorized mercedes-benz dealer for exceptional offers through mercedes-benz financial. ♪ >>> thunderstorms, hail and tornadoes are all slamming the south and midwest today. it may get worse. parts of mississippi, alabama and tennessee are under tornado watches right now and thunderstorms could bring up to two inches of rain with them. nbc meteorologist bill karins is joining me now with the latest. lots going on out there. good morning. >> from the flash flooding to the winter storm in the rockies, but the real threat to lives and property is the tornado outbreak that is going to start this afternoon here and last into this evening. a high risk of severe weather, this only happens a few times every spring. this is a large high-risk area in that red area. you're also under a moderate risk of severe weather. who's at the worst threat right now? tracking a very strong thunderstorm through the middle of mississippi. you see the little while, that's the active lightning strikes. red is where the worst of the storm is. this is a tornado warning that's in mississippi, heading for -